Synchronization method and system of control sequence numbers

Abstract

A synchronization method and system of control sequence numbers is provide to achieve radio link control sequence number synchronization between different network elements. This method includes the following steps: allocating a preset radio link control sequence number to a first radio link control protocol data unit corresponding to a first packet in a data burst and successively allocating a radio link control sequence number to subsequent radio link control protocol data units corresponding to packets of this data burst, when each designated network element in a plurality of designated network elements performing radio link control protocol process on the packets in the data burst received by said each designated network element.

Description

FIELD OF THE INVENTION[0001]The present invention relates to communication field, and in particular to a synchronization method and system of control sequence numbers.BACKGROUND OF THE INVENTION[0002]With the development of the Internet, a large amount of multimedia services emerge, and the requirements of people on mobile communication are no longer limited to the telephone and message services. At present, the application service is introduced into the multimedia service, and the feature of the application service is that a plurality of subscribers can receive the same data simultaneously, such as video on demand, TV broadcast, video conference, online education, interactive games, etc.[0003]In order to effectively use the resources of the mobile network, the multimedia broadcast multicast service (MBMS) technology is proposed, and the MBMS is a point-to-multipoint service in which a data source sends data to a plurality of subscribers. Through this service, the share of network r...

AI Technical Summary

Benefits of technology

[0021]By virtue of the above at least one technical solution of the present invention, after a lower-layer network element restarts, a predetermine RLC sequence number, allocated to the first protocol data unit generated by the first data packet in each data burst, is capable of maintaining RLC sequence number synchronization with other lower-layer network elements which do not restart, which avoids radio interference of adjacent cells.

Problems solved by technology

However, in the existing synchronization method of MBMS service among cells of a plurality of network elements, there is the problem that is: after one certain lower-layer network element restarts due to management reason or abnormal situation, this lower-layer network element is unable to determine a correct radio link control protocol sequence number, which causes it is incapable of maintaining RLC sequence number synchronization with other lower-layer network elements which do not restart.

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